Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on macOS and Linux, apps that call app.requestSingleInstanceLock() were vulnerable to an out-of-bounds heap read when parsing a crafted second-instance message. Leaked memory could be delivered to the app's second-instance event handler. This issue is limited to processes running as the same user as the Electron app. Apps that do not call app.requestSingleInstanceLock() are not affected. Windows is not affected by this issue. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0.

INFO

Published Date :

2026-04-03T23:56:42.200Z

Last Modified :

2026-04-06T15:31:46.052Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34776 vulnerability.

Vendors Products
Electron
  • Electron
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34776.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact